| About This Archive | | DCHAS-L 2009 Index | | DCHAS-L Yearly Index | |
Check out Safety Emporium for your N95, N99, and face shield needs.
|
Previous by Date: Subject: Re: Latex degradation, low humidity, Chinese drywall? Date: Fri, 20 Nov 2009 09:25:04 -0500 Author: Ken Simolo |
Next by Date: Subject: Toxicity teting on chemicals Date: Fri, 20 Nov 2009 09:54:10 -0500 Author: Jessica Whiteley |
You state that you feel that the flow gauges are more reliable; what are they measuring?? Has anyone actually used an anemometer to measure the face velocity on these hoods?? It sounds to me that since all the hoods are experiencing the same 'problem' that the exhaust of the HVAC system may be the culprit. Ray Ryan President & CEO Flow Sciences, Inc. rryan**At_Symbol_Here**flowsciences.com corporate office 800-849-3429 corporate fax 910-763-1220 www.flowsciences.com 2025 Mercantile Drive Leland, NC 28451 CONFIDENTIALITY NOTE: This e-mail, including all attachments, is directed in confidence solely to the person(s) to whom it is addressed, or an authorized recipient, and may not otherwise be distributed, copied or disclosed. The contents of this transmission may also be subject to intellectual property rights and all such rights are expressly claimed and are not waived. The contents of this e-mail do not necessarily represent the views or policies of Flow Sciences Inc. or its employees -----Original Message----- From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**list.uvm.edu] On Behalf Of Edward Senkbeil Sent: Thursday, November 19, 2009 4:13 PM To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU Subject: [DCHAS-L] Hoods The hoods (about 5 years old) in all our undergraduate chemistry labs are equipped with alarms which supposedly should go off with improper air flow. However many will continually alarm if the sash is pulled up by more than one third the way (below where sash has a normal catch about half way up). Is there any law / regulation which states that we must have the alarms working if they are part of the original equipment? All the hoods have flow gauges on them which are functioning, but we have been unable to get all the alarms to work properly. We are told it would be very expensive to get them all functioning. They become a problem in large student labs since they continually go off, and are distracting both faculty and students. We have considered disarming the alarm, but are concerned about any regulations we might be violating. Students are beginning to not pay attention to the flow gauges, but just automatically hit the mute button on the alarms. We believe the flow gauges are a more accurate reflection of any problems. Any comments or suggestions welcome. Ed Senkbeil, Ph.D. Chemistry Department Salisbury University
Previous post | Top of Page | Next post